Relays & Signal Conditioning

At RS, we stock a large choice of relay switch products for a wide variety of applications. Within our range, you will find products such as latching and non-latching relays, solid state relays, interface relays and reed relays. All our relay switch products are from trusted electrical relay suppliers such as our own RS PRO brand, Omron, Finder, TE Connectivity, Panasonic, Phoenix Contact and more.

What is a relay?

Relays are a type of switch that operate electronically to turn AC or DC currents on or off within an electrical circuit. Relays operate similar to a typical light switch, where power is switched on and off when the switch lever is moved, but the main difference lies in how a relay is operated by an electrical circuit rather than manually pressed.

Relays have many different uses and are often utilised in situations where isolation is necessary or when a circuit needs to be controlled with a low-power signal. There are also specialised types of relay switches that are used for very high-power applications; these are referred to as contactors.

Types of relay

Electromechanical Relay (EMR): An electromechanical relay uses a physical moving arm, triggered by a voltage applied to the relay coil, this arm connects contacts within the output component of the relay. The movement of the arm allows an electrical circuit to be completed, allowing AC or DC current to flow to the connected equipment. The physical components within the relays commonly make a "click" sound, which can be used as an audible operation indicator.

Solid State Relay (SSR): Solid state relays provide a similar function to an EMR but these do not contain any moving components, increasing long-term reliability. SSR' feature semiconductor switching elements; typically thyristors, triacs and diodes that transmit and energise the output signal. When activated, the input signal acts like a switch that allows a high-voltage signal to pass through the SSRs output components.

Shop relays, relay accessories, and signal conditioners isolators at RS today.

Relay Accessories
Relay Accessories
Relays
Relays
Signal Conditioners & Isolators
Signal Conditioners & Isolators

16940 Products showing for Relays & Signal Conditioning

1 of 847
In Stock
Omron MY4 14 Pin 2250V ac DIN Rail Relay Socket, for use with Miniature Power Relays
  • RS Stock No. 186-4180
  • Mfr. Part No. PYFZ-14-E
Each
PHP791.56(exc. VAT)
In Stock
Omron H3CR Series Plug In Timer Relay, 100-240/100-125V ac/dc, 2-Contact, 0.05 → 1080000s, DPDT
  • RS Stock No. 264-1622
  • Mfr. Part No. H3CR-A8 100-240VAC/100-125VDC
Each
PHP8,617.88(exc. VAT)
In Stock
Omron Plug In Latching Power Relay, 220 → 240V ac Coil, 6A Switching Current, 4PDT
  • RS Stock No. 271-1942
  • Mfr. Part No. MY4IN-GS-R AC220/240
Each
PHP795.92(exc. VAT)
In Stock
Omron MY4 14 Pin 250V ac DIN Rail Relay Socket, for use with MY4IN, MY4IN1, MY4IN1-D2, MY4IN-CR, MY4IN-D2, MY4N, MY4N1,
  • RS Stock No. 196-6147
  • Mfr. Part No. PYF14A-N
Each
PHP812.05(exc. VAT)
In Stock
Schneider Electric Phase, Voltage Monitoring Relay, 3 Phase, DPDT, 380 → 480V ac, DIN Rail
  • RS Stock No. 124-0184
  • Mfr. Part No. RM22TR33
Each
PHP12,619.30(exc. VAT)
Currently unavailable
Omron Plug In Power Relay, 24V dc Coil, 5A Switching Current, 4PDT
  • RS Stock No. 794-8136
  • Mfr. Part No. MY4N DC24(S)
Each
PHP1,485.70(exc. VAT)
Temporarily out of stock
Omron Plug In Power Relay, 110 → 120V ac Coil, 5A Switching Current, 4PDT
  • RS Stock No. 794-8167
  • Mfr. Part No. MY4N AC110/120(S)
Each
PHP1,099.92(exc. VAT)
In Stock
Schneider Electric Plug In Power Relay, 24V dc Coil, 8A Switching Current, 4PDT
  • RS Stock No. 884-1313
  • Mfr. Part No. RXM4AB2BD
Each
PHP1,016.04(exc. VAT)
In Stock
Omron Plug In Power Relay, 220 → 240V ac Coil, 10A Switching Current, DPDT
  • RS Stock No. 271-1906
  • Mfr. Part No. MY2-GS-R AC220/240
Each
PHP503.26(exc. VAT)
In Stock
Omron MKS 8 Pin 250V ac DIN Rail Relay Socket, for use with MK2PD-I, MK2PD-S, MK2P-I, MK2PND-I, MK2PND-S, MK2PN-I,
  • RS Stock No. 353-657
  • Mfr. Part No. PF083A-E
Each
PHP503.85(exc. VAT)
In Stock
Omron H3Y Series DIN Rail, Surface Mount Timer Relay, 200 → 230V ac, 4-Contact, 2 → 60s, 1-Function, 4PDT
  • RS Stock No. 340-623
  • Mfr. Part No. H3Y-4 AC200-230 60S
Each
PHP3,286.83(exc. VAT)
In Stock
Omron MY2 8 Pin 250V ac DIN Rail Relay Socket, for use with MY2IN, MY2IN1, MY2IN1-D2, MY2IN-CR, MY2IN-D2, MY2N, MY2N1,
  • RS Stock No. 196-6169
  • Mfr. Part No. PYF08A-N
Each
PHP572.31(exc. VAT)
In Stock
Omron Plug In Power Relay, 24V dc Coil, 10A Switching Current, DPDT
  • RS Stock No. 329-799
  • Mfr. Part No. LY2 24VDC
Each
PHP1,229.41(exc. VAT)
In Stock
Omron Plug In Power Relay, 24V dc Coil, 10A Switching Current, DPDT
  • RS Stock No. 828-7328
  • Mfr. Part No. LY2N 24VDC
Each
PHP1,052.66(exc. VAT)
In Stock
Omron H3CR Series DIN Rail Mount Timer Relay, 100 → 125 V dc, 100 → 240V ac, 2-Contact, 0.05 s →
  • RS Stock No. 177-0098
  • Mfr. Part No. H3CR-AP AC100-240/DC100-125
Each
PHP5,971.67(exc. VAT)
In Stock
i-Autoc KSI Series Solid State Relay, 25 A Load, Panel Mount, 280 V ac Load, 32 V dc Control
  • RS Stock No. 164-0576
  • Mfr. Part No. KSI240D25R-L
Each
PHP1,586.73(exc. VAT)
In Stock
Phoenix Contact RIF-0-RPT-24DC/ 1AU Series Interface Relay, DIN Rail Mount, 24V dc Coil, SPST, 1-Pole
  • RS Stock No. 794-3759
  • Mfr. Part No. 2903359
Each
PHP571.86(exc. VAT)
In Stock
ABB Insulation Monitoring Relay, 1, 3 Phase, DPDT, 0 → 400 V ac, 0 → 600V dc, DIN Rail
  • RS Stock No. 806-5917
  • Mfr. Part No. 1SVR750660R0200 CM-IWN.1S
Each
PHP37,280.63(exc. VAT)
In Stock
Omron Plug In Power Relay, 24V dc Coil, 10A Switching Current, SPDT
  • RS Stock No. 353-837
  • Mfr. Part No. G2R-1-SN 24VDC (S)
Each
PHP871.84(exc. VAT)
In Stock
Pilz PNOZsigma PNOZ s5 C Safety Relay 24V dc, Dual-Channel 2 Safety Contacts
  • RS Stock No. 191-9856
  • Mfr. Part No. 751105
Each
PHP23,995.23(exc. VAT)
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